CN201354793Y

CN201354793Y - Bolt connector tightly locked by lock-tongue nut

Info

Publication number: CN201354793Y
Application number: CNU2009200793578U
Authority: CN
Inventors: 张昌华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-03
Filing date: 2009-03-03
Publication date: 2009-12-02
Anticipated expiration: 2019-03-03

Abstract

The utility model discloses a bolt connector tightly locked by a lock-tongue nut. In the bolt connector, the thread column of the bolt is provided with a lock trough; the wall body of the nut is internally provided with a compression spring and a lock-tongue; when the operations of screwing down and rotating are carried out, the lock-tongue is propped and withdrawn into a locking notch by the thread column so that the rotation keeps running; when the operation of loosening is carried out, due to the action of the compression spring, the tongue tip of the lock tongue is pushed out of the locking notch and retained by the trough edge of the lock trough, thus leading the nut not to be capable of loosening. When the bolt connector tightly locked by the lock-tongue nut is used for the part connection of mechanical power, the nuts are not loosened or do not fall due to the long-term vibration of the mechanical power. If the nut needs to be loosened, the compression spring and the lock tongue can be removed and the operations of loosening and falling are carried out normally. The bolt connector is also applicable to the left-screwed and connected bolt connector only by reversely arranging part of the function part.

Description

Bolt connection piece by the tight lock of bolt nut

Technical field

The utility model relates to a kind of bolt connection piece, and specifically, the utility model is a kind of bolt connection piece by the tight lock of bolt nut.

Background technique

Known bolt connection piece is made up of bolt, nut, packing ring.In bolt connected, though nut is twisted very tightly, in the mechanokinetic motion, because long-term vibration, nut also can become flexible even come off, and then causes the loose or dislocation of component of machine, or leads to a disaster, and jeopardizes safety.So for the phenomenon that gets loose that prevents nut takes place, people usually adopt spring washer or with two overlapping nuts, or are locked with cotter pin and slotted nut.But in most of bolt connection pieces, even adopt spring washer or two overlapping nuts, in long-term vibration of mechanical power, the phenomenon that gets loose also can take place.

The model utility content

Technical problem to be solved in the utility model is, provide a kind of can be in long-term vibration of mechanical power can loose or dislocation bolt connection piece.

The utility model is achieved by following technical proposals, and the screw thread cylinder of bolt is provided with the locked groove of long strip, and the column cap of bolt is arranged to conical conehead; In the wall body of nut, be provided with the through fore shaft of inside and outside wall, in fore shaft, be respectively arranged with dead bolt according to its length, the pressure spring of adjacent dead bolt, the screw of blocking up of adjacent pressure spring makes dead bolt combine with locked groove by pressure spring and nut and bolt is tightly locked.

In technique scheme, the locked groove that is arranged on the screw column can be provided with one respectively according to the fastening degree of bolt connection piece needs on screw column, and relative two, three of five equilibrium, or criss-cross four locked grooves.Described locked groove all is the strip shelves grooves that are upright wall body from top to bottom.

In technique scheme, first section mouth of described fore shaft is circular, is provided with the internal thread that can be connected with the screw spiral of blocking up in mouthful; Next section of described fore shaft is tetragonal, and the wall of its square mouth shortens one rectangular mouthful by interior oral area to the nut inner thread circular hole in gradually.Described dead bolt also is a longitudinal bodies that is contracted in gradually to the lip of the tongue by root of the tongue portion, but the rectangular body of dead bolt is less than the rectangle hole of fore shaft, so dead bolt can freely stretch in fore shaft.But because the root of the tongue portion of dead bolt is greater than the mouth limit portion of fore shaft, even support out so dead bolt is compressed the spring power of putting, can from fore shaft, not come off yet, and, because the lip of the tongue of dead bolt is the internal thread round mouth setting according to nut, so dead bolt can support along with offseting of screw column in the withdrawal fore shaft in the helical rotation of nut and screw column.But rotate to locked groove when parallel at nut, because the space of leaving between fore shaft and the locked groove, can make dead bolt under the power effect of the top of pressure spring, stretch out fore shaft again and offset with locked groove, if rotate nut this moment toward opposite direction, then blocked by the trough rim of locked groove nut can't be rotated owing to the tongue limit of dead bolt, this moment, nut was promptly tightly locked.If continue again nut is rotated forward, this moment, dead bolt was supported back in the fore shaft by screw column again, and rotation is proceeded again, up to nut screwing clamping.

In technique scheme, described pressure spring is columniform helical spring; The described screw of blocking up is the fluting awl-end screw.The number of active coils of described pressure spring can dispose according to block up the distance between screw and the dead bolt and the big or small needs of active force.The described screw of blocking up can dispose according to the diameter and the length degree of the round mouth internal thread that is provided with on the fore shaft.

Owing to adopted technique scheme, in bolt connects, because the dead bolt that is provided with in the nut wall body stretches out fore shaft under the effect of pressure spring thrust, the tongue limit is propped up by the trough rim of the locked groove that is provided with on the bolt thread post, cause nut on screw column, can't rotate, therefore nut just can't loose or dislocation on screw column, also can not cause the loose or dislocation of connected piece, thereby can avoid the generation of mechanical accident.But when getting loose nut if desired, only need back out the screw of blocking up, withdraw from pressure spring and dead bolt, then the loose or dislocation of nut carries out equally.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the plan view of the utility model by the bolt of the bolt connection piece of the tight lock of bolt nut.

Fig. 2 is the plan view of bolt nut in the utility model, and dotted portion represents to be arranged on the invisible component thing in the nut wall body among the figure.

Fig. 3 is the partial enlarged drawing of the dead bolt structure that detaches out from the bolt nut of Fig. 2.

Fig. 4 is that dotted portion is expressed as the invisible component thing that is arranged in the nut wall body equally among the figure by the whole plan view of the bolt connection piece of the tight lock of bolt nut.

Embodiment

In embodiment illustrated in fig. 1, the screw thread cylinder of bolt 1 is provided with a locked groove 4 that is the upstanding wall shape from top to bottom, and the trough rim of locked groove 4 is built up in the right of locked groove 4, and the column cap of double-screw bolt 1 is arranged to cone shape conehead 3.

In embodiment illustrated in fig. 2, dot in the wall body of nut 2 and be provided with a fore shaft 5, first section mouth of fore shaft 5 is circular, is provided with internal thread in mouthful, and is connected with screw 8 spirals of blocking up.The adjacent screw of blocking up be pressure spring 7, adjacent pressure spring 7 be dead bolt 6.Dead bolt 6 here in fact the tip of the tongue supported out fore shaft 5.And this section fore shaft 5 that pressure spring 7 and dead bolt 6 are installed is tetragonal, and the wall of its square mouth shortens one rectangular mouthful by the oral area of interior internal thread circular hole to nut 2 in gradually

Be hidden in the connection enlarged view of the screw 8 of blocking up in nut 2 wall bodies, the spring 7 that contracts, tongue 6 among the Fig. 2 of the being embodiment embodiment illustrated in fig. 3.Its annexation as described in Figure 2.In the embodiment shown in fig. 3, dead bolt 6 is actual to be the rectangular body in a four directions, and its root of the tongue portion is greater than the lip of the tongue, and some circular arcs of the lip of the tongue are the circular arc settings according to the internal thread round mouth of nut 2.Pressure spring 7 shown in the diagram, the screw 8 of blocking up, dead bolt 6 all should be provided with according to the diameter of the nut 2 of actual disposition and the diameter and the length of fore shaft 5.

In embodiment illustrated in fig. 4, nut 2 is with after bolt 1 is connected, be arranged on the interior dead bolt 6 of nut 2 wall bodies when turning clockwise, dead bolt 6 is supported in the withdrawal fore shaft 5 by screw column, but when rotating to fore shaft 5 when paralleling with locked groove 4, because the notch space between fore shaft 5 and the locked groove 4, making dead bolt 6 be compressed spring 7 ejects, its the lip of the tongue just is against in the notch of locked groove 4, if want this moment nut 2 counter-rotatings are become flexible, then, make loosening can't carrying out because the right tongue limit of dead bolt 6 is blocked by the right trough rim of locked groove 4, thereby make nut 2 quilts even at the cost of one's life, also make whole bolt connection piece become the integral body of a tight lock.

Certainly; this utilizes dead bolt 6; bolt 1 link of nut 2 tight locks is not confined to bolt 1, the nut 2 that the use dextrorotation shown in this diagram is tightened; can be used in the left-handed bolt of tightening 1, nut 2 equally; dead bolt 6 reverse settings that only need to be arranged on the locked groove 4 on the screw column and be arranged in nut 2 fore shafts 5 get final product, but such being provided with all within protection domain of the present utility model.

Claims

1, a kind of bolt connection piece by the tight lock of bolt nut comprises bolt (1), the nut (2) that is threaded with bolt (1); It is characterized in that the screw thread cylinder of described bolt (1) is provided with the locked groove (4) of long strip; The column cap of described bolt (1) is conical conehead (3); The described through fore shaft of inside and outside wall (5) that in the wall body of nut (2), is provided with; In fore shaft (5), be respectively arranged with dead bolt (6), the pressure spring (7) of adjacent dead bolt (6), the screw of blocking up (8) of adjacent pressure spring (7) according to its length; Described dead bolt (6) combines with locked groove (4) the tight lock of nut (2) and bolt (1) by pressure spring (7).

2, the bolt connection piece by the tight lock of bolt nut according to claim 1 is characterized in that described locked groove (4) is the strip retaining groove that is upright wall body from top to bottom.

3, the bolt connection piece by the tight lock of bolt nut according to claim 1 is characterized in that first section mouth of described fore shaft (5) is circular, is provided with the internal thread that can be connected with the screw of blocking up (8) spiral in the mouth of circle; Next section mouth of described fore shaft (5) is tetragonal mouthful, and the wall of its square mouth dwindles into a rectangle hole by interior gradually to oral area.

4, the bolt connection piece by the tight lock of bolt nut according to claim 1 is characterized in that described dead bolt (6) is a rectangular body that is shunk gradually to the lip of the tongue by root of the tongue portion; The rectangular body of described dead bolt (6) is less than the rectangle hole of fore shaft (5); The root of the tongue portion of described dead bolt (6) is greater than the mouth limit portion of fore shaft (5); The lip of the tongue of described dead bolt (6) is the internal thread round mouth setting according to nut (2).

5, the bolt connection piece by the tight lock of bolt nut according to claim 1 is characterized in that described pressure spring (7) is a cylindrical helical spring.

6, the bolt connection piece by the tight lock of bolt nut according to claim 1 is characterized in that, the described screw of blocking up (8) is the fluting awl-end screw.